Twyfelfontein rock engravings (petroglyphs) dating from the late Stone Age, between 6000 and 2000 years, UNESCO World Heritage Site, Kunene region, Namibia, Africa

color image photography outdoors no people nobody day close up close up detail rock drawings engraving rock engraving rock engravings petroglyphs old unesco stone age world heritage site travel travel destinations horizontal rock ancient civilization ancient history rock art rock drawing twyfelfontein rock engraving petroglyph late stone age unesco world heritage site kunene region namibia africa